XML 13 R78.htm IDEA: XBRL DOCUMENT
v2.4.0.6

FEDERAL INCOME TAXES Tax Status of Dividends (Details) | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Income Tax Contingency [Line Items] |  |  |
Required Distribution Rate to Maintain REIT Status (in percent) | 90.00% |  |
Ordinary income | 75.00% | 100.00% | 95.00%
Qualified dividend | 22.00% | 0.00% | 0.00%
Capital gain | 3.00% | 0.00% | 5.00%
Total | 100.00% | 100.00% | 100.00%

X
- Definition Allocation Of Dividends, Capital Gain, Percent + References No definition available. + Details
Name: | akr_AllocationOfDividendsCapitalGainPercent
Namespace Prefix: | akr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Allocation Of Dividends, Ordinary Income, Percent + References No definition available. + Details
Name: | akr_AllocationOfDividendsOrdinaryIncomePercent
Namespace Prefix: | akr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Allocation of Dividends, Percent + References No definition available. + Details
Name: | akr_AllocationOfDividendsPercent
Namespace Prefix: | akr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Allocation Of Dividends, Qualified Dividend, Percent + References No definition available. + Details
Name: | akr_AllocationOfDividendsQualifiedDividendPercent
Namespace Prefix: | akr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Required Distribution Rate to Maintain REIT Status + References No definition available. + Details
Name: | akr_RequiredDistributionRateToMaintainReitStatus
Namespace Prefix: | akr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_IncomeTaxContingencyLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration